NDLI: Adaptive modulation/TDMA with a BDDFE for 2 Mbit/s multi-media wireless communication systems

Content Provider	IEEE Xplore Digital Library
Author	Sampei, S. Morinaga, N. Kamio, Y.
Copyright Year	1995
Description	Author affiliation: Fac. of Eng., Osaka Univ., Japan (Sampei, S.; Morinaga, N.)
Abstract	This paper proposes an adaptive modulation/time division multiple access (TDMA) system using a bi-directional decision feedback equalizer (BDDFE) and space diversity to support multi-media wireless communication systems with a bit rate of up to 2 Mbit/s under frequency selective fading conditions. A 7-tap BDDFE and space diversity are employed to cope with a delay time of up to 3-symbol duration. When the maximum delay time (/spl tau//sub max/) is shorter than 3-symbol duration for the full rate, the full rate is employed. When /spl tau//sub max/ is longer than that, the symbol rate is lowered to half-rate, quarter-rate or 1/8 -rate to satisfy the condition that /spl tau//sub max/ is shorter than 3-symbol duration. The modulation level is also selected from 16QAM and QPSK according to the channel conditions to increase spectral efficiency. Computer simulation confirms that the proposed scheme is effective to achieve 2 Mbit/s transmission at /spl tau//sub max/=10 /spl mu/s and 1 Mbit/s at /spl tau//sub max/=20 /spl mu/s.
Starting Page	311
Ending Page	315
File Size	543194
Page Count	5
File Format	PDF
ISBN	078032742X
ISSN	10903038
DOI	10.1109/VETEC.1995.504879
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-07-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time division multiple access Data structures Boolean functions Multimedia communication Delay effects Bidirectional control Decision feedback equalizers Multimedia systems Wireless communication Bit rate
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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